{"product_id":"bonaire-vulcan-quasar-overheat-switch-120deg-ctsps2055821sp","title":"Bonaire Vulcan Quasar Overheat Switch","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Bonaire 120℃ overheat switch is a critical safety component for a range of ducted gas heaters, including Vulcan, Quasar, and Pyrox units. It's designed to reliably cut power if the heat exchanger or plenum temperatures exceed safe limits, preventing damage and potential hazards.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eReplacing these on older units, especially after a blocked filter or poor airflow has caused a few trips, is just part of keeping homes warm and safe during the chilly Aussie winters.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eBest For\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eHVAC technicians and service teams working on Bonaire ducted gas heating systems.\u003c\/li\u003e\n\u003cli\u003eOwners performing maintenance on compatible Vulcan, Quasar, and Pyrox heaters.\u003c\/li\u003e\n\u003cli\u003eApprentices learning gas heating system diagnostics and safety component replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis overheat switch (Bonaire Part Number 2055821SP) is specifically designed for integration with:\u003c\/p\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eBonaire Quasar units\u003c\/li\u003e\n\u003cli\u003eVulcan 26mJ \u0026amp; 40mJ units\u003c\/li\u003e\n\u003cli\u003ePyrox units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIf you're running a different model, check fittings and specs before ordering.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003ePre-set trip temperature of 120℃ for consistent safety cut-off.\u003c\/li\u003e\n\u003cli\u003eDirect replacement part, ensuring correct fitment and function for listed Bonaire, Vulcan, and Pyrox models.\u003c\/li\u003e\n\u003cli\u003eEssential safety device, protecting the heat exchanger and preventing overheating.\u003c\/li\u003e\n\u003cli\u003eRobust construction suitable for the demands of ducted gas heating environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 16px; margin-bottom: 20px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eActivation Temperature\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e120℃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eBonaire Part Number\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e2055821SP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eCompatible Units\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eBonaire Quasar, Vulcan 26mJ \u0026amp; 40mJ, Pyrox\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eOne (1) Bonaire Vulcan Quasar Overheat Switch 120℃ (CTSPS2055821SP)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eUsing It on the Job\u003c\/h2\u003e\n\u003col style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eAlways isolate power to the ducted gas heating unit at the main switchboard and perform a lockout procedure before starting any work.\u003c\/li\u003e\n\u003cli\u003eAccess the heater's control compartment and locate the existing overheat switch.\u003c\/li\u003e\n\u003cli\u003eCarefully disconnect the wiring and remove the old switch, noting its orientation and mounting.\u003c\/li\u003e\n\u003cli\u003eInstall the new Bonaire 120℃ overheat switch (CTSPS2055821SP) in the same position, ensuring secure mounting.\u003c\/li\u003e\n\u003cli\u003eReconnect the wiring exactly as it was, checking for firm connections.\u003c\/li\u003e\n\u003cli\u003eRestore power and test the heater's operation. Confirm the fan cycles correctly and there are no error codes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eLimitations \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eAlways ensure power is isolated and locked out before servicing any electrical components.\u003c\/li\u003e\n\u003cli\u003eOnly use this part for the specific Bonaire, Vulcan, and Pyrox models it is designed for. Incorrect application can lead to safety hazards.\u003c\/li\u003e\n\u003cli\u003eRegularly check your heater's airflow and filters to prevent nuisance trips from this switch, which indicates an underlying issue.\u003c\/li\u003e\n\u003cli\u003eGas appliance servicing should ideally be performed by a qualified and licensed gasfitter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTradie Pro Tip\u003c\/h2\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003eWhen you're swapping one of these out, take a good look at why the old one tripped. Is the filter choked? Are the ducts blocked? Don't just replace the switch; fix the root cause to save yourself a call-back.\u003c\/blockquote\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003ePair with other Bonaire spare parts like fan motors or gas valves, and consider a combustion analyser for proper heater commissioning and safety checks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bonaire","offers":[{"title":"Default Title","offer_id":43573017083963,"sku":"CTSPS2055821SP","price":41.02,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/571_CTSPS2055821SP_1.png?v=1780639743","url":"https:\/\/www.hvacshop.com.au\/products\/bonaire-vulcan-quasar-overheat-switch-120deg-ctsps2055821sp","provider":"HVAC Supply Shop","version":"1.0","type":"link"}